What is the momentum (in kg m/s) of a 131- kg football player running at a top speed of 9.9 m/s?
What is the momentum of a 9.32- g rifle bullet traveling at 618 m/s
131 * 9.9
.00932 * 618
To find the momentum of an object, you can use the formula:
Momentum = mass × velocity
1. For the football player:
Momentum = 131 kg × 9.9 m/s
Momentum = 1296.9 kg m/s
Hence, the momentum of a 131-kg football player running at a top speed of 9.9 m/s is 1296.9 kg m/s.
2. For the rifle bullet:
First, convert the mass of the bullet from grams to kilograms:
9.32 g ÷ 1000 = 0.00932 kg
Momentum = 0.00932 kg × 618 m/s
Momentum = 5.76256 kg m/s
Hence, the momentum of a 9.32 g rifle bullet traveling at 618 m/s is approximately 5.76256 kg m/s.
To calculate momentum, you need to use the formula:
Momentum = mass x velocity
Given that the mass of the football player is 131 kg and the top speed is 9.9 m/s, you can substitute these values into the formula to find the momentum:
Momentum = 131 kg x 9.9 m/s
Multiplying these values, you'll get:
Momentum = 1296.9 kg·m/s
Therefore, the momentum of the football player is 1296.9 kg·m/s.
For the second example, you are given the mass of the rifle bullet as 9.32 g and the velocity as 618 m/s. However, it is important to remember that the unit of mass should be in kilograms. To convert grams to kilograms, you need to divide by 1000:
Mass = 9.32 g / 1000 = 0.00932 kg
Now you have the mass, which you can multiply by the velocity to find the momentum:
Momentum = 0.00932 kg x 618 m/s
Multiplying these values gives:
Momentum = 5.74696 kg·m/s
Therefore, the momentum of the rifle bullet is 5.74696 kg·m/s.